Improvement in machines for making rivets



H. G. REED.

Rivet Machine.

Patented March 12. 1845.

UNrTnn STATES PATENT ii men.

HORATIO G. REED, OF SCITUATE, MASSACHUSETTS.

EMPROVEMENT IN MACHINES FOR WlAKiNG RiVETS.

To all whom it may concern.-

Be it known that I, HORATIO G. REED, of Scituate, in the county ofPlymouth and State of Massachusetts, have invented certain new anduseful Improvements in Machinery for Manufacturing Rivets, Screw-Blanks,or such other articles of similar character as may be successfully madeby the same; and I do hereby declare that the following description andaccompanying drawings taken in connection constitute a full and exactspecification of the construction and operation of my said invention.

Figure 1 of the drawings above mentioned represents a top view or planof my improved rivet-machine. Fig. 2 is an elevation of the sideopposite to that on which the fly-wheel is situated. Fig. 3 is alongitudinal central and vertical section. Fig. 4 is an elevation of theend at which the wire to be converted into rivets is introduced into themachine.

A strong bed-plate, A, Figs. 1, 2, 3, 4, of the dimensions required tosustain the several operative parts, to be hereinafter described, hastwo standards, B B, extending vertically from it, and supporting insuitable boxes, a

c, on their tops, a main horizontal shaft, 0. -'Tl1e said shaft has afly-wheel, D, upon one end, and is to be driven or put in revolutionabout its axis by manual or other suitable power properly applied to it.Upon the other end of the shaft is a crank-pulley, E, to the side ofwhich, and between the circumference and center of which, one end of aconnectingrod, F, is secured'by a crank-pin, b, upon which the rodplays. .The other end of the rod is jointed to the top of a lever, G,which extends upward from a horizontal shaft, H, turning on screwcenters or pivots c 0, (see Figs. 1,2,) passing through ears orprojections of the bed-piece. The heading-tool K is confined in asliding frame, L, which moves to and fro in a longitudinal direction,and is moved forward bya short projection, d, which extends upward fromthe shaft H, andis connected with the rear end of the sliding frame L bya pitman, a. A spring, f, draws back the heading-frame after theoperation of heading the rivet has been performed. Just above theheading-tool is a stationary plate or rest, M, which is supported 011the top of suitable standards, 9 g, which rise upward from theSpecification forming part of Letters Patent No. 3,9A5, dated March 12,hi5.

bed-plate A, as seen in the drawings. This said rest-plate has a smallguide or car, h, projecting vertically from or near its rear edge, around hole, a, being formed or bored through the said guide horizontallyand longitudinally, and on a level with the upper surface of therest-plate, in order to receive the wire from which the rivetsare to beout, which wire is passed through the said hole and bears or rests uponthe rest-plate. The stationary die It is placed directly in front of therest-plate, as seen in Fig. 3. The wire passes over its upper surface,or through asmall notch out there- 1n, and 1S pressed down into the sameby a spring, Z. The movable die or cutter which severs the rivet-blankfrom the wire consists of a block, 111-, of hardened steel,applied totheend of a lever, a, which moves vertically upon screw centers or pivots 0o, and is depressed bya cam or eccentric, arranged upon the main shaft,and raised by aspring, q, attached to the bed-plate. The movable die orcutter m is placed and moves in contact with the front vertical face ofthe fixed die k. When elevated to its highest position, the wire fromwhich the rivets are to be made is forced forward and enters a hole orpassage, 0', bored horizontally through the die or cutter m, and of adiameter just sufficient to receive the wire. A piston, s, is insertedin the passage 1', as seen in Fig. 3, the said piston being jointed tothe lower end of an upright lever, t at, which turns on a fulcrum, w, inthe lever N. The upper leg of the lever 25 unis forced against aneccentric, 'w, (fixed upon the main shaft,) by a spring, a". Theeccentric 10 should be formed in such manner that as soon as the movablecutting-die has descended far enough below the fixed die to separate therivetblank from the wire it shall throwthe upper part of the lever 15a 1) forward, and thereby cause the piston s to advance a short distancein the passage 0", so as to push out the rivet-blank as far as may benecessary, in order to enable the headingtool to make the head when itadvances and perform the heading operation. As soon as the head isformed, (the cam or eccentric being so shaped as not to move the leverwhile the operation of making the head is being effected,) the eccentricshould press the lever far enough forward to cause the piston to move inits passage and expel the rivet therefrom, which drops out of themachine.

The next portion of the apparatus is that by which the wire is forcedforward or fed into the machine as wanted as fast as the rivets areformed. Directly over and nearly down upon the rest-plate .M a bentspring bar or lever, y, is arranged as seen in the drawings, the sameturning upon a fulcrum, 2, at one or its lower end, or that end whichrests upon thebed-plate. The lower edge of that part of the said barimmediately over the plate M rests upon the wire or rod from which therivets are made. The said bar has certain-motions given itthat is tosay, it is raised from the wire and carried back and depressed upon thewire, and then carried forward, so as to move the wire forward with it,and cause its end to enter the passage 0', and pass into the same untilit abuts against the piston s. The said bar is forced back by a spring,a, which presses against its end. It is forced forward by a cam, b, (onthe main shaft,) which acts against the arm 0 of a le ver formed of twoarms, 0 (2, extending from a horizontal shaft, 6, the arm (1 extending ashortdistance through a hole in the end of the bar y. The bar is raisedby a lever, f g 71., turning on a fulcrum, y, in the top of a standard,12, applied to the bed-plate. One end, f, of the lever extends directlyunder neath the bar y, while the other end, h, passes under a pin orstud, K, inserted in the side of the lever N. Thus when the lever N isdepressed, it raises the bar y off the wire. At the proper time thespring or elasticity of the bar y brings it down upon the wire and holdsit thereupon until the bar is advanced to carry the wire forward.

he operative parts of my rivet-machine be ing now described, it remainsonly for me to state that it will be seen that the movable cut ting-dieperforms another operation besides that of cutting off thewire-blankviz., that of holding the blank during the operation ofheading the same-which I believe has never before been accomplished inany machine for making rivets or other articles of like nature.

By inspection of other rivet-machines patented it will be seen how muchsuch an improvement simplifies the mechanism and with how few parts theoperation of manufacturing rivets are conducted.

Having thus set forth the nature and principles of my. invention, thatwhich I claim is as follows, viz:

1. The spring bar or lever in combination with or as applied to therest-plate M, and

arranged and operating substantially as set HORATIO G. REED.

Witnesses:

H. EDDY, JOHN NOBLE,

